The HV value of the set \(P\)  is defined as the volume of the objective space dominated by solutions in \(P\)  and bounded by \(z^*\)  [1]}, which is defined as:
\(HV(P,z^*)=\lambda (\mathop {\bigcup }\limits _{p\in {P}}\lbrace x|p\prec {x}\prec {z^*}\rbrace )\) 
